firewall security and antivirus in ubuntu

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Ques:- How to use an antivirus and fire wall security for my ubuntu installed lappy or pc?

Ans:
A: Firewall
1. CLI manage : To enable firewall execute $sudo ufw enable This will enable ubuntu firewall and you can manage from command line.
2. GUI manage : $ sudo apt-get install gufw this will install gufw gui and will enable ufw (ubuntu firewall) This will help you to manage firewall security using gui
B: Antivirus

There is clamav avilable for all GNU/Linux and BSD destro :
1. CLI manage :Use $ sudo apt-get install clamav clamav-daemon clamav-freshclam to install clamav for your ubuntu.
2. GUI manage : If you wanna manage your clamav antivirus from gui there is clam tk gui front end avilable for clam av, download its .deb file from here http://sourceforge.net/projects/clamtk/ and get it install by the command $ sudo dpkg -i clamtk_4.45-1_all.deb this will install gui to manage clam av.

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